No that isn't a sign of HIV my advice is too stop shaving down there for a while and bath everyday after use a fine talc too keep it all dry all day and remove the hairs when its not painfull by grabbing the ends when possible and pulling out the whole hair.try not too damager the skin as this may cause bigger problems for you in the future peronis diesease is caused by scar tissue on the member itself.
No that's common. You have to exposed to HIV. If you have been, get a test. They are free or very cheap.